atomic: use <linux/atomic.h>

This allows us to move duplicated code in <asm/atomic.h>
(atomic_inc_not_zero() for now) to <linux/atomic.h>

Signed-off-by: Arun Sharma <asharma@fb.com>
Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: David Miller <davem@davemloft.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/misc/phantom.c b/drivers/misc/phantom.c
index b05db55..21b28fc 100644
--- a/drivers/misc/phantom.c
+++ b/drivers/misc/phantom.c
@@ -26,7 +26,7 @@
 #include <linux/sched.h>
 #include <linux/mutex.h>
 
-#include <asm/atomic.h>
+#include <linux/atomic.h>
 #include <asm/io.h>
 
 #define PHANTOM_VERSION		"n0.9.8"